; Compile with: nasm -f elf tiny2.asm && ld -s -o tiny2 tiny2.o
;
; Resource: http://www.faqs.org/docs/Linux-HOWTO/Assembly-HOWTO.html#AEN853

section .data				;section declaration

msg     db      "Hello, world!",0xa	;our dear string
len     equ     $ - msg                 ;length of our dear string

section .text				;section declaration

			;we must export the entry point to the ELF linker or
    global _start	;loader. They conventionally recognize _start as their
			;entry point. Use ld -e foo to override the default.

_start:

;write our string to stdout

        mov     edx,len ;third argument: message length
        mov     ecx,msg ;second argument: pointer to message to write
        mov     ebx,1   ;first argument: file handle (stdout)
        mov     eax,4   ;system call number (sys_write)
        int     0x80	;call kernel

;and exit

	mov	ebx,0	;first syscall argument: exit code
        mov     eax,1   ;system call number (sys_exit)
        int     0x80	;call kernel
